US4429769A - Floating caliper type disc brake - Google Patents

Floating caliper type disc brake Download PDF

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Publication number
US4429769A
US4429769A US06/363,780 US36378082A US4429769A US 4429769 A US4429769 A US 4429769A US 36378082 A US36378082 A US 36378082A US 4429769 A US4429769 A US 4429769A
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US
United States
Prior art keywords
caliper
stationary member
friction pads
friction
guide plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/363,780
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English (en)
Inventor
Harumi Oshima
Tukasa Uno
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Tokico Ltd
Original Assignee
Tokico Ltd
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Filing date
Publication date
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Assigned to TOKICO LTD. reassignment TOKICO LTD. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HARUMI, OSHIMA, UNO, TUKASA
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Publication of US4429769A publication Critical patent/US4429769A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
    • F16D55/227—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing by two or more pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
    • F16D65/0972—Resilient means interposed between pads and supporting members or other brake parts transmitting brake reaction force, e.g. elements interposed between torque support plate and pad

Definitions

  • This invention relates to a floating caliper type disc brake and, particularly to the disc brake of the type wherein a stationary member slidably or floatingly guiding thereon a caliper is integrally formed with such as a knuckle member or the like constituting a non-rotatable part of a vehicle, and the caliper and friction pads constitute an assembly such that the assembly is mounted on the knuckle member by two guide bolts.
  • a stationary member slidably or floatingly guiding thereon a caliper is integrally formed with such as a knuckle member or the like constituting a non-rotatable part of a vehicle, and the caliper and friction pads constitute an assembly such that the assembly is mounted on the knuckle member by two guide bolts.
  • Such disc brakes enable to reduce the weight of the vehicle and to decrease the number of parts and are usually called as direct-mount disc brakes.
  • Japanese Utility Model Disclosure (Kokai-Koho) No. 55-175639 shows a friction pad guiding and supporting device wherein a guiding and supporting member formed of a spring steel plate extends between a caliper and a friction pad such that the relative displacement between the friction pad and the guiding and supporting member in the radially inward and outward directions and in the circumferential directions is prevented and the relative displacement between the caliper and the guiding and supporting member is restricted such that the friction pad can be suspended from the caliper when the caliper and the friction pad are demounted from the stationary member.
  • One of the objects of the invention is to provide a guiding and supporting member between the caliper and friction pads so that the friction pads can be suspended from the caliper when the friction pads and the caliper are demounted from the caliper.
  • Another object of the invention is to provide the guiding and supporting member such that the guiding and supporting member is interposed between the friction pads and the stationary member when the caliper and the friction pads are mounted on the stationary member such that the guiding and supporting member acts to guide the friction pads in applying brakes and to transmit the braking torque between the friction pads and the stationary member.
  • the floating caliper type disc brake according to the invention comprises a pair of friction pads, a caliper adapted to be mounted on a stationary member to slide thereon in the direction of the axis of a rotatable disc, each of the friction pads having on opposite ends in the direction of the circumference of the disc projections for mounting slidably the friction pads on the stationary member, and a guide plate adapted to be interposed between the stationary member and each of projections of friction pads in mounting the friction pads on the stationary member.
  • the guide plate has a generally channel shaped retaining portion for engaging slidably with the projection of the friction pad, an upwardly extending hook portion extending from the upper end of the retaining portion and along the side surface of the caliper, and a hook provided on the upper end of the hook portion and adapted to engage with a circumferentially projecting lug provided on the side surface of the caliper, thereby suspending the friction pads on the caliper when the caliper and the friction pads are disassembled from the stationary member.
  • FIG. 1 is a front view of a disc brake according to the invention
  • FIG. 2 is a side view
  • FIG. 3 is a perspective view of a guide plate constituting one of essential parts of the disc brake of FIG. 1, and
  • FIG. 4 is a front view of the disc brake of FIG. 1 being mounted on a stationary member.
  • the disc brake according to the invention includes a caliper 1, two friction pads 6 and 6, and two guide plates 9 and 9.
  • the caliper 1 has two circumferentially (sidewisely as viewed in FIG. 1) spaced mounting portions 2 and 2 which is adapted to slidably receive therein respective guide pins (not shown) in mounting the caliper 1 on a stationary member 21 (FIG. 4), a limb portion 4 incorporating therein a piston 15 for pressing adjacent friction pad 6, and another limb portion 5 for acting on another (the left side as viewed in FIG. 2) friction pad 6.
  • the friction pads 6 have backing plates 7 and friction material integrally secured thereto.
  • Each backing plate has on circumferentially opposite ends projections 8 and 8 for mounting slidably the friction pad on correspondingly shaped stepped portions of the stationary member in mounting the friction pad on the stationary member.
  • Each of guide plates 9 has, as shown in FIG. 3, a generally channel shaped retaining portion 10 extending in the direction of the axis of a rotatable disc 16 (FIG. 4) or in the direction vertical to the paper of FIG. 1, for slidably engaging with the projection 8 of the friction pad 6, an upwardly extending hook portion 14 having a hook 14A on the upper end portion thereof, a torque transmitting portion 11 extending from the lower end of the channel shaped portion 10, and an axially extending ridge 12 on the lower end of the torque transmitting portion 11.
  • the guide plate 9 is formed of an anticorrosion material such as stainless steel or the like.
  • the channel shaped portion 10 further includes on the upper end thereof a resilient portion 13 resiliently extending downwardly and circumferentially inwardly as shown in FIG. 3 so that the channel shaped portion resiliently engages with the upper and lower ends of the projection 8.
  • the resilient engagement between the guide plate and the friction pad is not so large to interfere the sliding movement therebetween in the direction of the axis of the disc in applying brakes.
  • the guide plate 9 further has on the radially inner end (the lower end as viewed in FIG. 2) of the torque transmitting portion 11 an axially extending ridge portion 12.
  • the ridge portion 12 is adapted to engage with a radially inner edge of torque receiving portion of the stationary member when the caliper, the guide plate and the friction pad are mounted on the stationary member thereby locating the guide plate with respect to the stationary member, preventing radially outward movement of the guide plate and the friction pad with respect to the stationary member and preventing rattling movement of friction pad with respect to the stationary member.
  • the caliper 1, the friction pads 6 and the guide plates 9 are assembled together to have the condition as seen in FIGS. 1 and 2 and, thereafter, the assembly is mounted on a stationary member 21 as shown in FIG. 4.
  • the stationary member 21 is integrally formed on such as a knuckle member of a vehicle and includes pad guiding portions 22 and 22 which are spaced in the direction of the circumference of a rotatable disc 16 and straddling respectively the outer circumference of the disc 16.
  • the pad guiding portions 26 have respectively radially outwardly facing shoulders for mounting thereon projections 8 and 8 of the friction pads 6 interposing therebetween channel shaped portions 10 of the guide plates.
  • the guiding portions 22 further have torque receiving portions 23 defining circumferentially opposing torque receiving surfaces for engaging respectively the torque transmitting portions 11 of guide plates 9, and the radially inner edges of the torque receiving surfaces are formed to snugly engage with axially extending ridges 12 of the guide plates 9.
  • the friction pads 6 and 6 and guide plates 9 and 9 are mounted on the stationary member 21 as shown in FIG. 4, the hooks 14A of the guide plates 9 preferably separate from the lugs 3 and 3 of the caliper 1.
  • the friction pads 6 and 6 are resiliently mounted on the stationary member and the vibrations therebetween can be prevented and rattling noise caused of such vibrations can be suppressed and, further, the caliper simply acts to press the friction pads in the direction of the axis of the disc.
  • the guide plates can effectively prevent rust or the like which will otherwise be observed between the friction pads and the stationary member.
  • guide plates formed of such as stainless steel are provided on circumferentially opposite sides of friction pads which act, when the caliper and friction pads are mounted on the stationary member, to locate the friction pads on guiding surfaces of the stationary member preventing vibrations of friction pads which allowing axial movement of friction pads in applying brakes and, when the caliper and friction pads are not mounted on the stationary member, to hang or suspend friction pads from the caliper thereby constituting an assembly. Therefore, it is possible to simplify the assembly process and to improve the productivity.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
US06/363,780 1981-03-31 1982-03-31 Floating caliper type disc brake Expired - Lifetime US4429769A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1981045936U JPS57159038U (fr) 1981-03-31 1981-03-31
JP56-45936 1981-03-31

Publications (1)

Publication Number Publication Date
US4429769A true US4429769A (en) 1984-02-07

Family

ID=12733151

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/363,780 Expired - Lifetime US4429769A (en) 1981-03-31 1982-03-31 Floating caliper type disc brake

Country Status (2)

Country Link
US (1) US4429769A (fr)
JP (1) JPS57159038U (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5358079A (en) * 1993-09-21 1994-10-25 Alliedsignal Inc. Disc brake with friction pad backing plate biasing spring
EP0732521A1 (fr) * 1995-03-16 1996-09-18 Akebono Brake Industry Co., Ltd. Clip pour patin de frein à disque
WO1997035121A1 (fr) * 1996-03-18 1997-09-25 Lucas Industries Public Limited Company Frein a disque a garniture partielle
US6223866B1 (en) * 2000-06-30 2001-05-01 Kelsey-Hayes Company Damped pad spring for use in a disc brake assembly
US20060037821A1 (en) * 2004-08-20 2006-02-23 Manuel Barbosa Pad spring for opposed piston calipers
US20060070828A1 (en) * 2002-07-24 2006-04-06 Uwe Hendrich Brake holder for a floating-caliper disk brake with a brake pad guide spring
US20070029148A1 (en) * 2005-08-08 2007-02-08 Akebono Corporation North America Caliper brake pad clip
CN104011422A (zh) * 2011-12-15 2014-08-27 罗伯特·博世有限公司 碟式制动块的导轨和配备这种导轨的碟式制动器
EP2141380B1 (fr) 1999-10-26 2017-01-04 Robert Bosch GmbH Ressort de guidage d'éléments de friction et frein à disque comportant au moins un tel ressort.

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5358079A (en) * 1993-09-21 1994-10-25 Alliedsignal Inc. Disc brake with friction pad backing plate biasing spring
EP0732521A1 (fr) * 1995-03-16 1996-09-18 Akebono Brake Industry Co., Ltd. Clip pour patin de frein à disque
US5699882A (en) * 1995-03-16 1997-12-23 Akebono Brake Industry Co., Ltd. Pad clip for disc brake
AU694614B2 (en) * 1995-03-16 1998-07-23 Akebono Brake Industry Co., Ltd. Pad clip for disc brake
WO1997035121A1 (fr) * 1996-03-18 1997-09-25 Lucas Industries Public Limited Company Frein a disque a garniture partielle
EP0984188A2 (fr) 1996-03-18 2000-03-08 Lucas Industries Public Limited Company Frein à disque à garniture partielle
EP0984188A3 (fr) * 1996-03-18 2000-08-02 Lucas Industries Public Limited Company Frein à disque à garniture partielle
EP2141380B1 (fr) 1999-10-26 2017-01-04 Robert Bosch GmbH Ressort de guidage d'éléments de friction et frein à disque comportant au moins un tel ressort.
EP2141380B2 (fr) † 1999-10-26 2024-05-29 Robert Bosch GmbH Ressort de guidage d'éléments de friction et frein à disque comportant au moins un tel ressort.
US6223866B1 (en) * 2000-06-30 2001-05-01 Kelsey-Hayes Company Damped pad spring for use in a disc brake assembly
US20060070828A1 (en) * 2002-07-24 2006-04-06 Uwe Hendrich Brake holder for a floating-caliper disk brake with a brake pad guide spring
US7513340B2 (en) * 2002-07-24 2009-04-07 Continental Teves Ag & Co. Ohg Brake holder for a floating-caliper disk brake with a brake pad guide spring
US20060037821A1 (en) * 2004-08-20 2006-02-23 Manuel Barbosa Pad spring for opposed piston calipers
US20070029148A1 (en) * 2005-08-08 2007-02-08 Akebono Corporation North America Caliper brake pad clip
US9400023B2 (en) 2011-12-15 2016-07-26 Robert Bosch Gmbh Disc brake pad guideway and disc brake equipped with such a guideway
CN104011422A (zh) * 2011-12-15 2014-08-27 罗伯特·博世有限公司 碟式制动块的导轨和配备这种导轨的碟式制动器

Also Published As

Publication number Publication date
JPS57159038U (fr) 1982-10-06

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Owner name: TOKICO LTD., 6-3, FUJIMI 1-CHOME, KAWASAKI-KU, KA

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